JPS61232927A - Device for controlling constant speed traveling for car - Google Patents
Device for controlling constant speed traveling for carInfo
- Publication number
- JPS61232927A JPS61232927A JP60074511A JP7451185A JPS61232927A JP S61232927 A JPS61232927 A JP S61232927A JP 60074511 A JP60074511 A JP 60074511A JP 7451185 A JP7451185 A JP 7451185A JP S61232927 A JPS61232927 A JP S61232927A
- Authority
- JP
- Japan
- Prior art keywords
- vehicle speed
- deviation
- engine
- signal
- output
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/66—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings
Landscapes
- Controls For Constant Speed Travelling (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
Abstract
Description
【発明の詳細な説明】 〈産業上の利用分野〉 本発明は車両の定速走行制御装置に関する。[Detailed description of the invention] <Industrial application field> The present invention relates to a constant speed running control device for a vehicle.
〈従来の技術〉
従来、この種の装置としては、第７図に示すようなもの
がある。<Prior Art> Conventionally, there is a device of this type as shown in FIG.
即ち、エンジン１）に接続され、トルクコンバータと遊
星歯車式のトランスミッションとを組み合わせた自動変
速機１２を備える一方、自動変速機１２の出力軸近傍に
取り付けた車速センサ１３からの信号を入力する自動車
速制御装置１４を備える。That is, an automobile is connected to an engine 1) and includes an automatic transmission 12 that combines a torque converter and a planetary gear type transmission, and receives a signal from a vehicle speed sensor 13 attached near the output shaft of the automatic transmission 12. A speed control device 14 is provided.
そして、自動車速制御装置１４は、運転者により設定さ
れた車速の設定値と、前記車速センサ１３からの信号に
基づいて検出される車速の検出値とを比較して、エンジ
ン１）のスロットル弁を開閉駆動するアクチュエータ（
いわゆるスロットルオープナ）１５を駆動してスロット
ル弁開度を制御することにより、エンジン回転数を増減
制御して車速を設定値に保持する。Then, the vehicle speed control device 14 compares the vehicle speed setting value set by the driver with the vehicle speed detection value detected based on the signal from the vehicle speed sensor 13, and controls the throttle valve of the engine 1). Actuator (
By driving a so-called throttle opener (15) to control the opening of the throttle valve, the engine speed is controlled to increase or decrease and the vehicle speed is maintained at a set value.
また、登板特等アクチュエータ１５によるエンジン出力
制御では、車速を維持できな（なった場合には、電子制
御装置１６により自動変速機１２をシフトダウンして変
速比を段階的にダウンし、走行トルクを増大させるよう
にしている。In addition, engine output control by the special actuator 15 cannot maintain the vehicle speed (if this occurs, the electronic control device 16 downshifts the automatic transmission 12 to gradually lower the gear ratio and reduce the running torque. I'm trying to increase it.
（発明が解決しようとする問題点〉
このようにすれば、車速を設定値に保持できるのである
が、変速比が段階的に切り換えられるため、切換時のシ
ョックがあると共に燃費向上になお改善の余地があった
。(Problem to be solved by the invention) In this way, the vehicle speed can be maintained at the set value, but since the gear ratio is switched in stages, there is a shock when switching, and it is still difficult to improve fuel efficiency. There was room.
本発明は、上記の実状に鑑みなされたもので、変速比を
無段階に可変しつつ車速を一定に保持することにより、
安定した走行性を確保しつつ可及的に燃費向上を図れる
ようにした、車両の定速走行制御装置を提供することを
目的とする。The present invention was made in view of the above-mentioned circumstances, and by keeping the vehicle speed constant while varying the gear ratio steplessly,
It is an object of the present invention to provide a constant speed running control device for a vehicle that can improve fuel efficiency as much as possible while ensuring stable running performance.
く問題点を解決するための手段〉
このため、本発明は第１図に示すように、第１発明とし
て、制御信号に基づいてエンジンＡの出力制御部材を駆
動するアクチェエータＢと、エンジンの出力軸に接続さ
れた無段変速機Ｃと、車速を検出する手段りと、車速の
検出値と運転者により設定された車速設定値との信号を
入力して両者の偏差を算出する車速偏差算出手段Ｅと、
前記偏差が所定値未満のときは前記アクチュエータＢに
制御信号を出力して車速を前記設定値に近づけるように
エンジン出力を制御するエンジン出力制御手段Ｆと、前
記偏差が所定値以上のときは該偏差に応じたアナログ電
圧信号を出力する信号出力手段Ｇと、該アナログ電圧信
号に応じた変速比信号を前記無段変速機Ｃに出力して車
速を前記設定値に近づけるように変速比を制御する変速
比制御手段Ｈと、を備えるようにした。Means for Solving the Problems> Therefore, as shown in FIG. A continuously variable transmission C connected to the shaft, a means for detecting vehicle speed, and a vehicle speed deviation calculation that inputs signals between the detected vehicle speed value and the vehicle speed setting value set by the driver to calculate the deviation between the two. Means E and
an engine output control means F that outputs a control signal to the actuator B to control the engine output so that the vehicle speed approaches the set value when the deviation is less than a predetermined value; A signal output means G outputting an analog voltage signal according to the deviation, and a gear ratio signal corresponding to the analog voltage signal outputted to the continuously variable transmission C to control the gear ratio so that the vehicle speed approaches the set value. A gear ratio control means H is provided.
また、前記信号出力手段の代わりに、第２発明としては
偏差に応じたデユーティ信号を出力する信号出力手段を
設け、さらに第３発明としては偏差に応じたビットパタ
ーン信号を出力する信号出力手段を設けるようにした。Further, instead of the signal output means, a second invention provides a signal output means for outputting a duty signal according to the deviation, and a third invention further includes a signal output means for outputting a bit pattern signal according to the deviation. I decided to set it up.
く作用）
かかる構成により、車速の設定値と検出値との偏差が所
定値未満のときはエンジン出力制御によって車速制御が
行われ、偏差が所定値以上のときは変速比制御によって
車速制御が行われるので、いずれの場合も車速を滑らか
に調整して安定した走行性が得られると共に燃費も可及
的に向上する。With this configuration, when the deviation between the vehicle speed set value and the detected value is less than a predetermined value, vehicle speed control is performed by engine output control, and when the deviation is greater than or equal to the predetermined value, vehicle speed control is performed by gear ratio control. Therefore, in either case, the vehicle speed can be adjusted smoothly to provide stable driving performance, and fuel efficiency can be improved as much as possible.
〈実施例〉 以下に、本発明の実施例を図面に基づいて説明する。<Example> Embodiments of the present invention will be described below based on the drawings.
第２図は第１発明の一実施例を示す。FIG. 2 shows an embodiment of the first invention.
図において、車両に搭載されたエンジン１には、後述す
るマイクロコンピュータ等からなる自動車速制御装置６
からの制御信号によりエンジン１の出力制御部材である
スロットル弁を所定回動範囲で開閉駆動してエンジン回
転数を増減させるアクチュエータ２が設けられる。また
、エンジンｌの出力軸には無段変速機３が接続されてお
り、該無段変速機３は例えば油圧制御式のものが使用さ
れ、該制御油圧等をマイクロコンピュータ等からなる電
子制御装置４によってコントロールすることにより、変
速比を無段階に制御できるようになっている。In the figure, an engine 1 mounted on a vehicle includes a vehicle speed control device 6 comprising a microcomputer, etc., which will be described later.
An actuator 2 is provided that increases or decreases the engine speed by driving a throttle valve, which is an output control member of the engine 1, to open and close within a predetermined rotation range in response to a control signal from the engine. Further, a continuously variable transmission 3 is connected to the output shaft of the engine 1, and the continuously variable transmission 3 is of a hydraulically controlled type, for example, and the controlled hydraulic pressure is controlled by an electronic control device such as a microcomputer. 4, the gear ratio can be controlled steplessly.
即ち、電子制御装置４は、変速比制御手段を構成する。That is, the electronic control device 4 constitutes a gear ratio control means.
前記無段変速機３の出力軸近傍には、車速検出手段とし
ての車速センサ５が設けられている。A vehicle speed sensor 5 serving as vehicle speed detection means is provided near the output shaft of the continuously variable transmission 3.
一方、運転者により設定される車速信号を入力して車速
を設定値に保持するように制御する自動車速制御装置６
が設けられる。On the other hand, a vehicle speed control device 6 inputs a vehicle speed signal set by the driver and controls the vehicle speed to maintain the set value.
is provided.
前記自動車速制御装置６は前記車速の設定値を車速セン
サ５から入力した検出値と比較し、その偏差に応じて前
記アクチュエータ２又は電子制御装置４を介して無段変
速機３を制御することにより車速を設定値に保持する。The vehicle speed control device 6 compares the set value of the vehicle speed with a detected value input from the vehicle speed sensor 5, and controls the continuously variable transmission 3 via the actuator 2 or the electronic control device 4 according to the deviation. to maintain the vehicle speed at the set value.
具体的には、前記偏差が所定値未満のときは、アクチュ
エータ２を駆動制御してエンジン回転数を略一定に保つ
ように出力を制御することにより車速を設定値に近づけ
るように制御するが、偏差が所定値以上のときは電子制
御装置４に偏差に応じたアナログ電圧信号を出力し、電
子制御装置４はアナログ電圧値に応じた変速比信号を無
段変速機３に出力して変速比を制御することにより車速
を設定値に近づけるという制御が行われる。ここで、自
動車速制御装置６には図示しないＤ／Ａ変換器が内蔵さ
れ、電子制御装置４には前記Ｄ／Ａ変換器から出力され
たアナログ電圧信号を入力するＡ／Ｄ変換器が設けられ
ている。Specifically, when the deviation is less than a predetermined value, the vehicle speed is controlled to approach the set value by controlling the drive of the actuator 2 and controlling the output so as to keep the engine speed substantially constant. When the deviation is greater than or equal to a predetermined value, an analog voltage signal corresponding to the deviation is output to the electronic control device 4, and the electronic control device 4 outputs a gear ratio signal corresponding to the analog voltage value to the continuously variable transmission 3 to adjust the gear ratio. Control is performed to bring the vehicle speed closer to the set value. Here, the vehicle speed control device 6 has a built-in D/A converter (not shown), and the electronic control device 4 is provided with an A/D converter that inputs an analog voltage signal output from the D/A converter. It is being
したがって、自動車速制御装置６は、車速偏差算出手段
、エンジン出力制御手段及び信号出力手段を構成する。Therefore, the vehicle speed control device 6 constitutes a vehicle speed deviation calculation means, an engine output control means, and a signal output means.
次に、本実施例による具体的な定速走行制御動作を第３
図のフローチャートに従って第４図のタイムチャートを
参照しつつ説明する。Next, the specific constant speed running control operation according to this embodiment will be explained in the third section.
The process will be explained according to the flowchart shown in the figure while referring to the time chart shown in FIG.
Ｓｌでは、車速センサ５からの信号に基づき、現在の車
速ＶＳＦが検出される。At Sl, the current vehicle speed VSF is detected based on the signal from the vehicle speed sensor 5.
Ｓ２では、運転者により設定された車速の設定値ＶＫと
前記車速の検出値ｖ、ｇｐとの偏差ΔＶを求める。In S2, the deviation ΔV between the vehicle speed set value VK set by the driver and the detected vehicle speed values v and gp is determined.
Ｓ３では、前記偏差ΔＶが前記アクチュエータ２による
エンジン出力制御で制御可能な最大偏差ｖＬ以上である
か否かを判定する。In S3, it is determined whether the deviation ΔV is greater than or equal to the maximum deviation vL that can be controlled by the engine output control by the actuator 2.
Ｓ３で１Δｖ ｌ ＜ Ｖ Ｌと判定された場合は、Ｓ
４でΔＶに応じた制御信号をアクチュエータ２に出力す
る。これによりアクチュエータ２はスロットル弁開度を
制御して車速を設定値に保持させる。If it is determined in S3 that 1Δv l < V L, S
At step 4, a control signal corresponding to ΔV is output to the actuator 2. Accordingly, the actuator 2 controls the throttle valve opening degree to maintain the vehicle speed at the set value.
ここで車速の検出値が設定値より大きい場合には、スロ
ットル弁が閉じる方向に偏差Δ■に応じた所定角度駆動
され、これにより混合気供給量が減少して機関出力が低
下する。これによりエンジン回転数が減少することによ
り車速か減少して設定値に近づく （第４図ａ部分）。Here, if the detected value of the vehicle speed is larger than the set value, the throttle valve is driven in the closing direction by a predetermined angle according to the deviation Δ■, thereby reducing the amount of air-fuel mixture supplied and the engine output. As a result, the engine speed decreases, causing the vehicle speed to decrease and approach the set value (part a in Figure 4).
また、車速の検出値が設定値より小さい場合は、スロッ
トル弁が開く方向に同じく偏差Δ■に応じた所定角度駆
動され、混合気供給量が増大してエンジン回転数が増大
することにより車速か増大して設定値に近づく （第４
図す部分）。In addition, if the detected value of vehicle speed is smaller than the set value, the throttle valve is driven in the opening direction by a predetermined angle corresponding to the deviation Δ■, and the amount of air-fuel mixture supplied increases and the engine speed increases, thereby increasing the vehicle speed. increases and approaches the set value (4th
(part shown).
Ｓ５で、電子制御装置４への出力電圧をＯに保持するこ
とにより変速比を現状に維持する（第４図Ｃ部分）。At S5, the output voltage to the electronic control unit 4 is held at O to maintain the current speed ratio (section C in FIG. 4).
一方、Ｓ３で１Δｖ１≧ｖＬと判定された場合は、Ｓ６
へ進み、電子制御装置４に出力されるアナログ電圧を
Ｖｖ”ｌΔＶ ｌ ・ｋ＋ ＋Ｖ＋（ｋ＋は所定の係数
）として算出する。■、は定数である。On the other hand, if it is determined in S3 that 1Δv1≧vL, S6
, the analog voltage output to the electronic control device 4 is calculated as Vv''lΔV l ·k+ +V+ (k+ is a predetermined coefficient). ■ and are constants.
Ｓ７では、前記アナログ電圧が電子制御装置４に出力さ
れる。In S7, the analog voltage is output to the electronic control device 4.
Ｓ８では、電子制御装置４において前記自動車速制御装
置６から入力されるアナログ電圧を処理して、デジタル
信号に変換してアナログ電圧値を読取る。In S8, the electronic control device 4 processes the analog voltage input from the vehicle speed control device 6, converts it into a digital signal, and reads the analog voltage value.
Ｓ９では、Ｓ８で求めた電圧値が０であるか否かを判定
し、Ｖｖ＝Ｏの場合は、変速比を変化させることなく終
了する。In S9, it is determined whether the voltage value obtained in S8 is 0 or not, and if Vv=O, the process ends without changing the gear ratio.
ｖｖ≠０の場合は、３１０へ進み、■□に定数に２を乗
じて変速比の補正係数Ｐ、を設定する。If vv≠0, the process proceeds to step 310, where ■□ is multiplied by a constant by 2 to set the speed ratio correction coefficient P.
Ｓｌｌでは、前記補正係数Ｐ１を乗じて補正した変速比
の信号を無段変速機３に出力し、これにより、該変速機
３の変速比ｒａｔｉｏが補正され、もって車速を設定値
に保持させるように補正制御される。Sll outputs a signal of the gear ratio corrected by multiplying by the correction coefficient P1 to the continuously variable transmission 3, thereby correcting the gear ratio ratio of the transmission 3, thereby maintaining the vehicle speed at the set value. The correction is controlled.
即ち、ΔＶ）Ｖ、である場合は、例えば平地走行から登
板走行に移行してアクチュエータ２でエンジン出力を最
大限増大させても車速か低下するような場合であるから
、力不足であると判断し、変速比を増大する制御を行っ
て走行トルクを高めるように制御する（第４図ｄ部分）
。In other words, if ΔV)V, for example, it is a case where the vehicle speed decreases even if the engine output is increased to the maximum by actuator 2 when moving from flat driving to hill driving, and therefore it is determined that the power is insufficient. Then, control is performed to increase the gear ratio to increase the running torque (part d in Figure 4).
.
かかる自動制御を行ってもなお出力不足である場合は、
自動定速走行制御を解除して運転者のアクセル操作に切
り換えられるようになっている。If the output is still insufficient even after performing such automatic control,
The automatic constant speed driving control can be canceled and switched to the driver's accelerator operation.
また、車速か復帰してきた場合は、変速比を一定に保持
して再度エンジン出力制御による車速制御が行われる。If the vehicle speed returns to normal, the speed ratio is held constant and vehicle speed control is performed again using engine output control.
一方、ΔＶ＜−ＶＬである場合は、例えば平地走行から
降板走行に移行し、アクチュエータ２でエンジン出力を
減少させてエンジンブレーキをかけて車速の増大を抑え
きれないような場合であるから、この場合も、変速比を
増大する制御が行われてエンジンブレーキ効果が高めら
れると共に、変速比の増大によりエンジン回転数が所定
値以上に増大すると、別途設けられるフューエルカット
機構が作動して燃料供給が停止されるので、エンジンブ
レーキ効果が一層高められる（第４図ｅ部分）。On the other hand, if ΔV<-VL, this is the case, for example, when driving on a flat road to driving downhill, and actuator 2 reduces the engine output and applies engine braking to prevent the increase in vehicle speed. In this case, control is performed to increase the gear ratio to enhance the engine braking effect, and when the engine speed increases above a predetermined value due to the increase in the gear ratio, a separately installed fuel cut mechanism is activated to cut off the fuel supply. Since the engine is stopped, the engine braking effect is further enhanced (part e in Figure 4).
このように車速の増大時に変速比を増大させる制御は従
来の自動変速機付車両においては行われていないため、
運転者による制御を行うしかなく、また、シフトダウン
制御するような制御を行ったとしても、変速比が段階的
に変化するためショックが大きく走行安定性に劣る。This kind of control to increase the gear ratio when the vehicle speed increases is not performed in conventional automatic transmission vehicles.
Control must be performed by the driver, and even if control such as downshift control is performed, the gear ratio changes in stages, resulting in large shocks and poor driving stability.
この点、無段変速機を使用する本発明においては、車速
の変化に対応させて変速比が滑らかに変化するので、シ
ョックもなく安定した走行が行えると共に燃費の改善を
図れ、しかも、前記したフューエルカント機構の作動に
よる燃費改善効果も大きい。In this regard, in the present invention that uses a continuously variable transmission, the gear ratio changes smoothly in response to changes in vehicle speed, so it is possible to drive stably without shock and improve fuel efficiency. The fuel cant mechanism also has a significant effect on improving fuel efficiency.
また、前記した車速か低すぎて変速比を増大させる場合
も、従来の自動変速機付車両のシフトダウン操作による
ようなショックを解消できる。Furthermore, even when the speed ratio is increased because the vehicle speed is too low, the shock caused by a downshift operation in a conventional vehicle with an automatic transmission can be eliminated.
尚、ｋ、及びに２の値は本実施例のように単一の定数で
なく、ΔＶや車速に応じて複数個設けたり、関数として
設定するようにしてもよく、ｋ。Note that the values of k and 2 are not a single constant as in this embodiment, but may be set in a plurality according to ΔV or vehicle speed, or as a function.
をΔｖ〉０の場合とΔｖ＜Ｏの場合とで異なる値として
もよい。may be different values depending on whether Δv>0 or Δv<O.
第５図は第２発明の一実施例におけるフローチャートを
示す。FIG. 5 shows a flowchart in an embodiment of the second invention.
すなわち、前記偏差１Δ■１が所定値以上のときには、
自動車速制御装置６から電子制御装置４に偏差に応じた
ＯＮデユーティ比ΔＤの信号を出力すル（Ｓ２６．
Ｓ２７＞ 、 マた、偏差１Δｖ１が所定値未満のとき
には、上記実施例と同様に機関出力制御により車速を一
定に保持させ、所定デユーティ比りの信号を電子制御装
置４に出力する（Ｓ２４、 ３２５）。そして、電子制
御装置４においては、３２Ｂでデユーティ信号を処理し
てそのデユーティ比ΔＤを求めた後、そのデユーティ比
ΔＤが前記所定デユーティ比りか否かを判定する（Ｓ２
９）。That is, when the deviation 1Δ■1 is greater than a predetermined value,
A signal of ON duty ratio ΔD corresponding to the deviation is output from the vehicle speed control device 6 to the electronic control device 4 (S26.
S27>, when the deviation 1Δv1 is less than a predetermined value, the vehicle speed is kept constant by engine output control as in the above embodiment, and a signal with a predetermined duty ratio is output to the electronic control device 4 (S24, 325 ). Then, in the electronic control device 4, after processing the duty signal at 32B to obtain the duty ratio ΔD, it is determined whether the duty ratio ΔD is equal to or less than the predetermined duty ratio (S2
9).
そして、ΔＤ−Ｄのときは、変速比を変化させることな
く終了する。また、ΔＤ≠Ｄのときは、Ｓ３０へ進み、
ΔＤに係数に２を乗じて変速比の補正係数Ｐ１を設定し
た後、前記補正係数Ｐ１を乗じて補正した変速比の信号
を無段変速機３に出力し、もって車速を設定値に保持す
るように変速比を変化させる。Then, when ΔD-D, the process ends without changing the gear ratio. Further, when ΔD≠D, proceed to S30,
After multiplying ΔD by a coefficient of 2 to set a gear ratio correction coefficient P1, a signal of the gear ratio corrected by multiplying the correction coefficient P1 is output to the continuously variable transmission 3, thereby maintaining the vehicle speed at the set value. Change the gear ratio as follows.
本発明においても、車速に対応させて変速比を円滑に変
化できるので、変速ショックもなく安定した走行が行え
ると共に燃費の改善を図れる。Also in the present invention, since the gear ratio can be smoothly changed in accordance with the vehicle speed, stable driving can be achieved without shift shock, and fuel efficiency can be improved.
第６図は第３発明の一実施例におけるフローチャートを
示す。FIG. 6 shows a flowchart in an embodiment of the third invention.
すなわち、前記偏差１ΔＶ１が所定値以上のときには、
自動車速制御装置６から電子制御装置４に偏差に応じた
ビットパターン信号（例えばＯ２Ｈ，Ｈ）を出力する（
Ｓ４６．５４７）。また、偏差１Δｖ１が所定値未満の
ときには、上記実施例と同様に機関出力制御により車速
を一定に保持させ、所定のビットパターン信号０．Ｏ，
Ｈを電子制御装置４に出力する（３４４． ５４５）。That is, when the deviation 1ΔV1 is greater than or equal to a predetermined value,
A bit pattern signal (for example, O2H, H) corresponding to the deviation is output from the vehicle speed control device 6 to the electronic control device 4 (
S46.547). Further, when the deviation 1Δv1 is less than a predetermined value, the vehicle speed is maintained constant by engine output control as in the above embodiment, and a predetermined bit pattern signal 0. O,
H is output to the electronic control device 4 (344.545).
そして、電子制御装置４においては、３４８でビットパ
ターン信号を処理してそのデータ値を求めた後、そのデ
ータ値が前記０．０．Ｈか否かを判定する（３４９）。Then, in the electronic control unit 4, after processing the bit pattern signal to obtain its data value in step 348, the data value is set to the above-mentioned 0.0. It is determined whether it is H (349).
そして、データ値＝０．０．Ｈのときは変速比を変化さ
せることなく終了する。また、データ値≠Ｏ，Ｏ，Ｈの
ときはＳ５０に進み、データ値に係数ｋｔを乗じて変速
比の補正係数Ｐ、を設定した後、前記補正係数Ｐ、を乗
じて補正した変速比の信号を無段変速機３に出力し、も
って車速を設定値に保持するように変速比を変化させる
。And data value=0.0. When H, the process ends without changing the gear ratio. When the data value≠O, O, H, the process proceeds to S50, where the data value is multiplied by the coefficient kt to set the gear ratio correction coefficient P, and then the corrected gear ratio is multiplied by the correction coefficient P. A signal is output to the continuously variable transmission 3, thereby changing the gear ratio so as to maintain the vehicle speed at the set value.
ここで、第２及び第３発明における５２１． Ｓ２２゜
Ｓ４１． Ｓ４２は第１発明におけるＳｌ、Ｓ２と同
様であるので説明を省略している。Here, 521. in the second and third inventions. S22°S41. Since S42 is the same as Sl and S2 in the first invention, the explanation is omitted.
〈発明の効果〉
以上説明したように、本発明によれば定速走行制御時に
おいて、エンジン回転数制御では車速を設定値に制御し
きれない場合は変速比を滑らかに変化させて制御する構
成としたため、安定した走行性を確保できると共に燃費
を可及的に改善できるという効果が得られる。<Effects of the Invention> As explained above, according to the present invention, during constant speed driving control, if the engine speed control cannot control the vehicle speed to a set value, the gear ratio is controlled by smoothly changing it. Therefore, it is possible to ensure stable running performance and to improve fuel efficiency as much as possible.
第１図は第１〜第３発明の構成図、第２図は第１発明の
一実施例を示す構成図、第３図は同上実施例の定速走行
制御を示すフローチャート、第４図は同上実施例の定速
走行制御時の各特性のタイムチャート、第５図は第２発
明の一実施例のフローチャート、第６図は第３発明の一
実施例のフローチャート、第７図は定速走行制御装置の
従来例を示す構成図である。
１・・・エンジン ２・・・アクチュエータ ３・
・・無段変速機 ４・・・電子制御装置 ５・・・
車速センサ ６・・・自動車速制御装置
特許出願人 日本電子機器株式会社
代理人 弁理士 笹 島 冨二雄
第４図
ＷＩ２！懐
小 嗜−ｍＭ ″ 大
第３図Fig. 1 is a block diagram of the first to third inventions, Fig. 2 is a block diagram showing an embodiment of the first invention, Fig. 3 is a flow chart showing constant speed running control of the same embodiment, and Fig. 4 is a block diagram showing an embodiment of the first invention. A time chart of each characteristic during constant speed driving control of the above embodiment, FIG. 5 is a flowchart of an embodiment of the second invention, FIG. 6 is a flowchart of an embodiment of the third invention, and FIG. 7 is a constant speed FIG. 1 is a configuration diagram showing a conventional example of a travel control device. 1...Engine 2...Actuator 3.
...Continuously variable transmission 4...Electronic control device 5...
Vehicle speed sensor 6...Vehicle speed control device patent applicant Japan Electronics Co., Ltd. Agent Patent attorney Fujio SasashimaFigure 4 WI2! Huai-Sho-mM'' Large Figure 3
Claims (3)
動するアクチュエータと、エンジンの出力軸に接続され
た無段変速機と、車速を検出する手段と、車速の検出値
と運転者により設定された車速設定値との信号を入力し
て両者の偏差を算出する車速偏差算出手段と、前記偏差
が所定値未満のときは前記アクチュエータに制御信号を
出力して車速を前記設定値に近づけるようにエンジン出
力を制御するエンジン出力制御手段と、前記偏差が所定
値以上のときは該偏差に応じたアナログ電圧信号を出力
する信号出力手段と、該アナログ電圧信号に応じた変速
比信号を前記無段変速機に出力して車速を前記設定値に
近づけるように変速比を制御する変速比制御手段と、を
備えたことを特徴とする車両の定速走行制御装置。(1) An actuator that drives the output control member of the engine based on a control signal, a continuously variable transmission connected to the output shaft of the engine, a means for detecting vehicle speed, and a means for detecting the detected vehicle speed and a value set by the driver. vehicle speed deviation calculation means for inputting a signal between the set value of the vehicle speed and calculating the deviation between the two; and when the deviation is less than a predetermined value, outputting a control signal to the actuator to bring the vehicle speed closer to the set value. engine output control means for controlling engine output; signal output means for outputting an analog voltage signal according to the deviation when the deviation is a predetermined value or more; A constant-speed running control device for a vehicle, comprising: a gear ratio control means for outputting to a transmission to control a gear ratio so that the vehicle speed approaches the set value.
動するアクチュエータと、エンジンの出力軸に接続され
た無段変速機と、車速を検出する手段と、車速の検出値
と運転者により設定された車速設定値との信号を入力し
て両者の偏差を算出する車速偏差算出手段と、前記偏差
が所定値未満のときは前記アクチュエータに制御信号を
出力して車速を前記設定値に近づけるようにエンジン出
力を制御するエンジン出力制御手段と、前記偏差が所定
値以上のときは該偏差に応じたデューティ信号を出力す
る信号出力手段と、該デューティ信号に応じた変速比信
号を前記無段変速機に出力して車速を前記設定値に近づ
けるように変速比を制御する変速比制御手段と、を備え
たことを特徴とする車両の定速走行制御装置。(2) An actuator that drives the output control member of the engine based on a control signal, a continuously variable transmission connected to the output shaft of the engine, a means for detecting vehicle speed, and a vehicle speed detection value set by the driver. vehicle speed deviation calculation means for inputting a signal between the set value of the vehicle speed and calculating the deviation between the two; and when the deviation is less than a predetermined value, outputting a control signal to the actuator to bring the vehicle speed closer to the set value. engine output control means for controlling engine output; signal output means for outputting a duty signal according to the deviation when the deviation is a predetermined value or more; 1. A constant speed running control device for a vehicle, comprising: a gear ratio control means for controlling a gear ratio so that the vehicle speed approaches the set value.
動するアクチュエータと、エンジンの出力軸に接続され
た無段変速機と、車速を検出する手段と、車速の検出値
と運転者により設定された車速設定値との信号を入力し
て両者の偏差を算出する車速偏差算出手段と、前記偏差
が所定値未満のときは前記アクチュエータに制御信号を
出力して車速を前記設定値に近づけるようにエンジン出
力を制御するエンジン出力制御手段と、前記偏差が所定
値以上のときは該偏差に応じたビットパターン信号を出
力する信号出力手段と、該ビットパターン信号に応じた
変速比信号を前記無段変速機に出力して車速を前記設定
値に近づけるように変速比を制御する変速比制御手段と
、を備えたことを特徴とする車両の定速走行制御装置。(3) an actuator that drives the output control member of the engine based on the control signal; a continuously variable transmission connected to the output shaft of the engine; a means for detecting vehicle speed; vehicle speed deviation calculation means for inputting a signal between the set value of the vehicle speed and calculating the deviation between the two; and when the deviation is less than a predetermined value, outputting a control signal to the actuator to bring the vehicle speed closer to the set value. engine output control means for controlling engine output; signal output means for outputting a bit pattern signal according to the deviation when the deviation is greater than a predetermined value; A constant-speed running control device for a vehicle, comprising: a gear ratio control means for outputting to a transmission to control a gear ratio so that the vehicle speed approaches the set value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60074511A JPS61232927A (en) | 1985-04-10 | 1985-04-10 | Device for controlling constant speed traveling for car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60074511A JPS61232927A (en) | 1985-04-10 | 1985-04-10 | Device for controlling constant speed traveling for car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61232927A true JPS61232927A (en) | 1986-10-17 |
Family
ID=13549423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60074511A Pending JPS61232927A (en) | 1985-04-10 | 1985-04-10 | Device for controlling constant speed traveling for car |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61232927A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6460437A (en) * | 1987-08-31 | 1989-03-07 | Fuji Heavy Ind Ltd | Control device for constant speed traveling of vehicle with continuously variable transmission |
| JPS6460440A (en) * | 1987-08-31 | 1989-03-07 | Fuji Heavy Ind Ltd | Control device for constant speed traveling of vehicle with continuously variable transmission |
| US5129475A (en) * | 1988-09-20 | 1992-07-14 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Cruise control device for motor vehicles |
| WO1992017347A1 (en) * | 1991-04-02 | 1992-10-15 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Control device for internal combustion engine and continuously variable speed change gear |
| US6104976A (en) * | 1997-09-01 | 2000-08-15 | Nissan Motor Co., Ltd. | Vehicle speed control system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59103070A (en) * | 1982-12-01 | 1984-06-14 | Toyota Motor Corp | Automatic control method of vehicle speed for vehicle having variable speed transmission |
-
1985
- 1985-04-10 JP JP60074511A patent/JPS61232927A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59103070A (en) * | 1982-12-01 | 1984-06-14 | Toyota Motor Corp | Automatic control method of vehicle speed for vehicle having variable speed transmission |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6460437A (en) * | 1987-08-31 | 1989-03-07 | Fuji Heavy Ind Ltd | Control device for constant speed traveling of vehicle with continuously variable transmission |
| JPS6460440A (en) * | 1987-08-31 | 1989-03-07 | Fuji Heavy Ind Ltd | Control device for constant speed traveling of vehicle with continuously variable transmission |
| US5129475A (en) * | 1988-09-20 | 1992-07-14 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Cruise control device for motor vehicles |
| WO1992017347A1 (en) * | 1991-04-02 | 1992-10-15 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Control device for internal combustion engine and continuously variable speed change gear |
| US6104976A (en) * | 1997-09-01 | 2000-08-15 | Nissan Motor Co., Ltd. | Vehicle speed control system |
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